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AAExtension+UITableView.swift
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AAExtension+UITableView.swift
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//
// Extension+UITableView.swift
// AAExtensions
//
// Created by M. Ahsan Ali on 14/03/2019.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
public extension AA where Base: UITableView {
var lastSection: Int { base.numberOfSections > 0 ? base.numberOfSections - 1 : 0 }
func safeScrollToRow(at indexPath: IndexPath, scrollPosition: UITableView.ScrollPosition, animated: Bool) {
guard indexPath.section < base.numberOfSections,
indexPath.row < base.numberOfRows(inSection: indexPath.section) else { return }
base.scrollToRow(at: indexPath, at: scrollPosition, animated: animated)
}
func insertRowAtBottom(_ scrollToBottom: Bool = true) {
DispatchQueue.main.async {
let lastSection = base.numberOfSections - 1
let lastRowIndex = base.numberOfRows(inSection: lastSection)
let indexPath = IndexPath(row: lastRowIndex, section: lastSection)
base.insertRows(at: [indexPath], with: .none)
if scrollToBottom { base.scrollToRow(at: indexPath, at: .none, animated: false) }
}
}
func reloadToLastRow(_ lastRow: Int) {
DispatchQueue.main.async {
let lastSection = base.numberOfSections - 1
let lastRowIndex = base.numberOfRows(inSection: lastSection)
guard lastRowIndex > lastRow else { return }
let indexPath = IndexPath(row: lastRowIndex - lastRow, section: lastSection)
base.reloadRows(at: [indexPath], with: .automatic)
}
}
func scrollToBottom(_ animated: Bool = true) {
DispatchQueue.main.async {
if (base.numberOfSections > 0) {
let lastSection = base.numberOfSections - 1
let rows = base.numberOfRows(inSection: lastSection)
if (rows > 0 ) {
let lastRowIndex = rows - 1
let indexPath = IndexPath(row: lastRowIndex, section: lastSection)
base.scrollToRow(at: indexPath, at: .bottom, animated: animated)
}
}
}
}
func setOffsetToBottom(animated: Bool) {
base.setContentOffset(CGPoint(x: 0, y: base.contentSize.height - base.frame.size.height), animated: true)
}
}